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Auth Providers comparison · 2026
Supabase Auth (85) and NextAuth.js (82) are closely matched — this is one of the tightest Auth Providers comparisons in our database, with just 3 points separating them overall. The two are closest on Free Tier, where the gap is just 2 points. Both offer a free tier, making either a low-risk starting point. Use the radar chart and dimension table below to find which fits your specific priorities best.
Supabase Auth
Open-source auth built into your Postgres stack
85/100
NextAuth.js
The open-source auth library for Next.js — self-hosted
82/100
Radar comparison
Supabase Auth
85
NextAuth.js
82
Developer UX
SDK quality, documentation, and quickstart speed.
Security
MFA, passkeys, breach detection, and compliance certs.
Free Tier
Generosity of free plan — MAU limit and features included.
Feature Set
Social login, SSO, magic links, passwordless support, roles.
Performance
Token validation latency and uptime SLA.
Support
Documentation quality and paid support options.
Overall Score
Based on our independent scoring across 6 dimensions, Supabase Auth scores 85/100 overall versus NextAuth.js's 82/100 — a 3-point margin. Supabase Auth leads on Free Tier in particular. That said, NextAuth.js may still be the right choice if the dimensions where it scores higher match your specific priorities — the radar chart above shows the full profile side by side.
Both Supabase Auth and NextAuth.js offer a free tier, so entry-level cost is not a differentiating factor. Compare the feature and usage limits of each free plan to see which gives you more headroom before a paid upgrade is needed.
Supabase Auth scores higher on Support — 78/100 versus 70/100 for NextAuth.js. If support is your primary decision criterion, Supabase Auth is the stronger choice in this head-to-head.
Switching between auth providers tools is generally possible but involves migration effort: exporting your data or configuration from Supabase Auth, re-importing or reconfiguring in NextAuth.js, and updating any API integrations or environment variables in your codebase. The effort scales with how deeply embedded the tool is in your stack. Test NextAuth.js on a non-production project first before migrating.
Supabase Auth (85/100) is the better fit for teams who prioritise free tier — its strongest dimension — and who want a free entry point. NextAuth.js (82/100) is the better fit for teams who prioritise free tier and want a free entry point. If both dimensions matter equally, the overall score winner (Supabase Auth) is the safer default choice.
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